/*
 * Copyright 2019 Ververica GmbH.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.ververica.statefun.flink.core.logger;

import java.io.Closeable;
import java.io.IOException;
import java.io.OutputStream;

public interface CheckpointedStreamOperations {

  void requireKeyedStateCheckpointed(OutputStream keyedStateCheckpointOutputStream);

  void startNewKeyGroup(OutputStream stream, int keyGroup) throws IOException;

  Closeable acquireLease(OutputStream keyedStateCheckpointOutputStream);
}
